STS RWD V8-4.6L VIN A (2006)
17. Remove the brake caliper bleeder valve (1).
18. Inspect the brake caliper mounting bracket guide surfaces for corrosion and wear. Remove and replace the brake caliper mounting bracket if
damaged or worn.
Important: Do not use abrasives to clean the brake caliper piston.
19. Clean the brake caliper piston bores and seal counter-bores with denatured alcohol, or equivalent.
20. Clean the brake caliper pistons with denatured alcohol, or equivalent.
21. Dry the caliper piston bores and counter-bores with non-lubricated, filtered air.
22. Dry the brake caliper pistons with non-lubricated, filtered air.
23. Inspect the caliper bores for cracks, scoring, pitting, excessive corrosion.
24. If light corrosion is present in the caliper bores, attempt to remove the imperfection with a fine emery paper. If the imperfection cannot be
removed, replace the caliper assembly.
25. If cracks, scoring, pitting, and excessive corrosion are present in the caliper bores, replace the caliper assembly.
26. Inspect the caliper pistons for cracks, scoring, and/or damage. Replace the caliper pistons if any of these conditions exist.
Assembly Procedure
1. Install the brake caliper bleeder valve (1).
Tighten the brake caliper bleeder valve to 14 Nm (124 inch lbs.).
Notice: Refer to Fastener Notice in Service Precautions.
2. Install the brake caliper bleeder valve cap.
3. Lubricate the new piston seals (1) with Delco Supreme 11(R), GM P/N 12377967 (Canadian P/N 992667) or equivalent DOT-3 brake fluid from a
